CN110645947B - Rotor number modulus measuring method based on Polyworks - Google Patents
Rotor number modulus measuring method based on Polyworks Download PDFInfo
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- CN110645947B CN110645947B CN201910954577.9A CN201910954577A CN110645947B CN 110645947 B CN110645947 B CN 110645947B CN 201910954577 A CN201910954577 A CN 201910954577A CN 110645947 B CN110645947 B CN 110645947B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a rotor number-modulus measuring method based on Polyworks, which relates to the technical field of rotor blade detection.
Description
Technical Field
The invention relates to the technical field of rotor blade detection, in particular to a rotor number modulus measuring method based on Polyworks.
Background
At the present stage, a certain distance is kept between the rotor and the rotor cylinder body during operation, and the operation efficiency of the rotor is influenced by too large or too small distance.
The conventional measuring method is very inconvenient in measurement when a large amount of manpower is consumed and the rotor is large in size.
Disclosure of Invention
In order to improve the detection efficiency of the rotor, the technical scheme of the invention provides a rotor number modulus measurement method based on Polyworks. The technical scheme is as follows:
the invention provides a rotor number modulus measuring method based on Polyworks, which comprises the following steps: the method comprises the following steps: introducing a standard rotor model into the polyfworks; step two: selecting an axis and a horizontal plane on a standard rotor model as references, and measuring actual rotor characteristics through a laser tracker; step three: aligning the blade axis of the actual rotor model with the blade axis of the standard rotor model, aligning the actual rotor characteristics with the standard rotor model, and establishing a workpiece coordinate system; step four: taking the annular platform at the root of the impeller as a first reference surface, and selecting any two step circles on the rotor shaft to ensure the concentricity with the first reference; step five: acquiring the middle positions of two motion track circles formed by two highest rotating points of the blade, and shifting the first reference to the middle position in the direction of the center of the blade to form a second reference surface; step six: drawing a third reference circle with the same diameter as the blade on the second reference surface; step seven: selecting a point on the third reference circle, and drawing a fourth reference line parallel to the horizontal plane; step eight: rotating the fourth reference line anticlockwise by the same angle as the rotor cylinder, and setting the fourth reference line as a fifth reference line; step nine: calculating the distance between the highest rotating point and a fifth reference line, and calculating the distance between the blade and the rotor cylinder body during rotation according to the distance; step ten: and comparing whether the spacing meets the design standard.
Through the setting that the digifax was established for the data of actual rotor can be operated in Polyworks, only need obtain the point location data of actual rotor can, promoted detection speed greatly, through the settlement of fifth datum line, be close to actual rotor model with the reference surface of rotor cylinder body, two rotatory peak of rotor blade and the measurement of cylinder body distance of being convenient for have reduced the entity and have measured the distance, greatly increased measurement accuracy.
Particularly, the rotor number-modulus measuring method based on Polyworks further comprises the steps of arranging a target on the measured blade, establishing a fixed coordinate system according to the target, repeating the operation from the step one to the step ten on the blade to be measured after the rotor is rotated, re-acquiring the position of the target, updating the position state of the fixed coordinate system, and synchronizing the measured data measured later to the fixed coordinate system.
Through the arrangement of the targets, all the measurement data are counted in the same coordinate system, and the accuracy and the uniformity of the measurement data are further guaranteed.
Compared with the prior art, the invention has the beneficial effects that: through the setting that the digifax was established for the data of actual rotor can be operated in Polyworks, has avoided the manpower to the actual operation of rotor, has improved efficiency when having practiced thrift the manpower, through the settlement of fifth datum line, is close to actual rotor model with the reference surface of rotor cylinder body, and the measurement of two rotatory peak of rotor blade and cylinder body distance of being convenient for has reduced the entity measurement distance, greatly increased measurement accuracy.
Detailed Description
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
At the present stage, a certain distance is kept between the rotor and the rotor cylinder body during operation, and the operation efficiency of the rotor is influenced by too large or too small distance.
The conventional measuring method is very inconvenient in measurement when a large amount of manpower is consumed and the rotor is large in size.
In order to improve the detection efficiency of the rotor, the technical scheme of the invention provides a rotor number modulus measurement method based on Polyworks. The technical scheme is as follows:
the rotor number modulus measuring method based on the Polyworks comprises the following steps: the method comprises the following steps: introducing a standard rotor model into the polyfworks; step two: selecting an axis and a horizontal plane on a standard rotor model as references, and measuring actual rotor characteristics through a laser tracker; step three: aligning the blade axis of the actual rotor model with the blade axis of the standard rotor model, aligning the actual rotor characteristics with the standard rotor model, and establishing a workpiece coordinate system; step four: taking the annular platform at the root of the impeller as a first reference surface, and selecting any two step circles on the rotor shaft to ensure the concentricity with the first reference; step five: acquiring the middle positions of two motion track circles formed by two highest rotating points of the blade, and shifting the first reference to the middle position in the direction of the center of the blade to form a second reference surface; step six: drawing a third reference circle with the same diameter as the blade on the second reference surface; step seven: selecting a point on the third reference circle, and drawing a fourth reference line parallel to the horizontal plane; step eight: rotating the fourth reference line anticlockwise by the same angle as the rotor cylinder, and setting the fourth reference line as a fifth reference line; step nine: calculating the distance between the highest rotating point and a fifth reference line, and calculating the distance between the blade and the rotor cylinder body during rotation according to the distance; step ten: and comparing whether the spacing meets the design standard.
Through the setting that the digifax was established for the data of actual rotor can be operated in Polyworks, only need obtain the point location data of actual rotor can, promoted detection speed greatly, through the settlement of fifth datum line, be close to actual rotor model with the reference surface of rotor cylinder body, two rotatory peak of rotor blade and the measurement of cylinder body distance of being convenient for have reduced the entity and have measured the distance, greatly increased measurement accuracy.
Particularly, the rotor number-modulus measuring method based on Polyworks further comprises the steps of arranging a target on the measured blade, establishing a fixed coordinate system according to the target, repeating the operation from the step one to the step ten on the blade to be measured after the rotor is rotated, re-acquiring the position of the target, updating the position state of the fixed coordinate system, and synchronizing the measured data measured later to the fixed coordinate system.
Through the arrangement of the targets, all the measurement data are counted in the same coordinate system, and the accuracy and the uniformity of the measurement data are further guaranteed.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (2)
1. The rotor number modulus measuring method based on the Polyworks is characterized by comprising the following steps of:
the method comprises the following steps: introducing a standard rotor model into the polyfworks;
step two: selecting an axis and a horizontal plane on the standard rotor model as references, and measuring actual rotor characteristics through a laser tracker;
step three: aligning the blade axis of an actual rotor model with the blade axis of a standard rotor model, aligning the actual rotor characteristics with the standard rotor model, and establishing a workpiece coordinate system;
step four: taking the annular platform at the root of the impeller as a first reference surface, and selecting any two step circles on the rotor shaft to ensure the concentricity with the first reference;
step five: acquiring the middle positions of two motion track circles formed by two highest rotating points of the blade, and shifting the first reference to the middle positions in the direction of the center of the blade to form a second reference surface;
step six: drawing a third reference circle having the same diameter as the blade on the second reference plane;
step seven: selecting a point on the third reference circle, and drawing a fourth reference line parallel to the horizontal plane;
step eight: rotating the fourth reference line counterclockwise by the same angle as the rotor cylinder, and setting the fourth reference line as a fifth reference line;
step nine: calculating the distance between the highest rotating point and the fifth reference line, and calculating the distance between the blade and the rotor cylinder body during rotation according to the distance;
step ten: and comparing whether the distance meets the design standard.
2. The method of claim 1, further comprising providing targets on the measured blades, establishing a fixed coordinate system based on the targets, repeating the operations of the first to the tenth steps on the blades to be measured after rotating the rotor, reacquiring the positions of the targets, updating the position status of the fixed coordinate system, and synchronizing the measured data measured later to the fixed coordinate system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910954577.9A CN110645947B (en) | 2019-10-09 | 2019-10-09 | Rotor number modulus measuring method based on Polyworks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910954577.9A CN110645947B (en) | 2019-10-09 | 2019-10-09 | Rotor number modulus measuring method based on Polyworks |
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| CN110645947A CN110645947A (en) | 2020-01-03 |
| CN110645947B true CN110645947B (en) | 2021-06-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142408A (en) * | 1983-02-02 | 1984-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Device for measuring tip clearance of blade |
| CN101563588A (en) * | 2006-12-21 | 2009-10-21 | Mtu飞机发动机有限公司 | Apparatus and method for non-contacting blade oscillation measurement |
| CN104075677A (en) * | 2014-06-30 | 2014-10-01 | 东北大学 | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine |
| CN104501728A (en) * | 2014-12-12 | 2015-04-08 | 天津大学 | Tip clearance measurement method based on all-fiber tip timing |
| CN105526878A (en) * | 2016-01-16 | 2016-04-27 | 东北电力大学 | Real-time dynamic measurement method for measuring radial clearance between steam turbine rotor and stator |
| CN107687831A (en) * | 2017-08-14 | 2018-02-13 | 中国航发沈阳发动机研究所 | Aero-engine turns, stator radial clearance computational methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9068906B2 (en) * | 2013-10-02 | 2015-06-30 | Siemens Energy, Inc. | Turbine blade-mounted sensor fixture for tip gap measurement |
| US10920605B2 (en) * | 2017-12-21 | 2021-02-16 | General Electric Company | System and method for measuring eccentricity of turbine shell relative to turbine rotor |
-
2019
- 2019-10-09 CN CN201910954577.9A patent/CN110645947B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142408A (en) * | 1983-02-02 | 1984-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Device for measuring tip clearance of blade |
| CN101563588A (en) * | 2006-12-21 | 2009-10-21 | Mtu飞机发动机有限公司 | Apparatus and method for non-contacting blade oscillation measurement |
| CN104075677A (en) * | 2014-06-30 | 2014-10-01 | 东北大学 | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine |
| CN104501728A (en) * | 2014-12-12 | 2015-04-08 | 天津大学 | Tip clearance measurement method based on all-fiber tip timing |
| CN105526878A (en) * | 2016-01-16 | 2016-04-27 | 东北电力大学 | Real-time dynamic measurement method for measuring radial clearance between steam turbine rotor and stator |
| CN107687831A (en) * | 2017-08-14 | 2018-02-13 | 中国航发沈阳发动机研究所 | Aero-engine turns, stator radial clearance computational methods |
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